Does anyone have experience in modeling flicker noise in Verilog-A for use in transient simulations?  We have modeled noise in the past using the random function in combination with an S-domain filter on the output.  However, the designer has asked for noise with a lowpass characteristic of 10 dB/dec rolloff.  I am not sure how to easily model this in Verilog-A.  Any ideas would be greatly appreciated.  

- Rob

Thanks, Ken.    I tried it in Spectre and that looks like a fairly straightforward method to generate the lowpass filter with 10dB/dec rolloff.  

- Rob